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42 results for “Amblyomma”
Figure 7 in Abnormal morphology in Amblyomma coelebs and Amblyomma cf. oblongoguttatum (Acari: Ixodidae) collected on free-roaming Central American Tapir (Tapirus bairdii) from Nicaragua
Figure 7. Ventral view of Amblyomma cf. oblongoguttatum female with ectromely (arrow) and asymmetry of idiosoma.
Figure 6 in Abnormal morphology in Amblyomma coelebs and Amblyomma cf. oblongoguttatum (Acari: Ixodidae) collected on free-roaming Central American Tapir (Tapirus bairdii) from Nicaragua
Figure 6. Dorsal view of Amblyomma cf. oblongoguttatum female with ectromely and asymmetry of idiosoma.
Fig. 1 in Occurrence of Amblyomma mixtum on the water buffalo (Bubalus bubalis) in Mexico
Fig. 1. Occurrence of Amblyomma mixtum in the perianal region of a water buffalo (adult stage).
Figura 1 in Amblyomma mixtum Koch (Acari: Ixodidae) en ambientes peridomésticos de la Región Otomí-Tepehua, Hidalgo, México
Figura 1. Sitios de recolección de garrapatas en la Región OtomÍ-Tepehua, México.
Figure 3 in Abnormal morphology in Amblyomma coelebs and Amblyomma cf. oblongoguttatum (Acari: Ixodidae) collected on free-roaming Central American Tapir (Tapirus bairdii) from Nicaragua
Figure 3. Dorsal view of Amblyomma cf. oblongoguttatum female with atrophy on the left 3 (arrow).
Figure 8 in Abnormal morphology in Amblyomma coelebs and Amblyomma cf. oblongoguttatum (Acari: Ixodidae) collected on free-roaming Central American Tapir (Tapirus bairdii) from Nicaragua
Figure 8. Asymmetry of the scutum of Amblyomma cf. oblongoguttatum female.
Figure 4 in Abnormal morphology in Amblyomma coelebs and Amblyomma cf. oblongoguttatum (Acari: Ixodidae) collected on free-roaming Central American Tapir (Tapirus bairdii) from Nicaragua
Figure 4. Ventral view of Amblyomma cf. oblongoguttatum female with atrophy on the left 3 (arrow).
Figure 2 in Abnormal morphology in Amblyomma coelebs and Amblyomma cf. oblongoguttatum (Acari: Ixodidae) collected on free-roaming Central American Tapir (Tapirus bairdii) from Nicaragua
Figure 2. Ventral view of festoon malformation in a Amblyomma coelebs male.
Figure 5 in Abnormal morphology in Amblyomma coelebs and Amblyomma cf. oblongoguttatum (Acari: Ixodidae) collected on free-roaming Central American Tapir (Tapirus bairdii) from Nicaragua
Figure 5. Asymmetry of the scutum of Amblyomma cf. oblongoguttatum female.
Figure 1 in Abnormal morphology in Amblyomma coelebs and Amblyomma cf. oblongoguttatum (Acari: Ixodidae) collected on free-roaming Central American Tapir (Tapirus bairdii) from Nicaragua
Figure 1. Dorsal view of festoon malformation in a Amblyomma coelebs male.
Evaluation and selection of predictive models of the Neotropical hard tick Amblyomma patinoi (Ixodida: Ixodidae)
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Population genetic structure and demographic history of the lone star tick, Amblyomma americanum (Ixodida: Ixodidae): new evidence supporting old records
Range expansions are a potential outcome of climate change. Population genetic structure and demography can be used as tools to evaluate hypotheses on changes in geographic distribution. In this study we explored the genetic variability, population genetic structure, demographic history, and habitat suitability of Amblyomma americanum, a North American tick species that is a known vector of several pathogenic microorganisms. We used a novel double digestion restriction site-associated DNA sequencing (dd-RAD seq), and we discovered 8181 independent single nucleotide polymorphisms (SNPs) from 189 ticks from across the geographic range of the species. Overall, genetic diversity was lower than expected. Further, the edge populations did not have a statistically significant lower diversity than core populations, and hypotheses of range expansion are not supported by a test based on genetic data. Nonetheless, moderate levels of population structure were detected among geographic regions, with the northeast cluster the least variable. Demographic and species distribution models support a scenario where A. americanum was present in more northern locations in the past, underwent a bottleneck, and is now recovering. These findings highlight the importance of demographic modeling and genomic data in assessing the recent history and genetic structure of pathogen vectors.
FIGURE 5–10. Amblyomma oblongoguttatum larva. 5 in Redescription of the larva of Amblyomma oblongoguttatum Koch, 1844 (Acari: Ixodidae) by light and scanning electron microscopy
FIGURE 5–10. Amblyomma oblongoguttatum larva. 5. Gnathosoma, dorsal view (30 µm); 6 Gnathosoma, ventral view (30 µm); 7. Detail of tibiotarsus and hypostome (30 µm); 8. Detail of scutum (30 µm); 9. Coxae I–III (20 µm); 10.Tarsus I, dorsal view (30 µm).
FIGURE 2. Amblyomma oblongoguttatum larva. Tarsus I in Redescription of the larva of Amblyomma oblongoguttatum Koch, 1844 (Acari: Ixodidae) by light and scanning electron microscopy
FIGURE 2. Amblyomma oblongoguttatum larva. Tarsus I dorsal views. Abbreviations: d—dorsal; a— antiaxial; p—paraxial; la—lateral anterior; lp—lateral posterior.
FIGURE 1 in Redescription of the larva of Amblyomma oblongoguttatum Koch, 1844 (Acari: Ixodidae) by light and scanning electron microscopy
FIGURE 1. Amblyomma oblongoguttatum larva. Gnathosoma dorsal (right) and ventral (left) views. Abbreviations: d—dorsal; v—ventral; a—antiaxial; p—paraxial; t—terminal; F—femur; G—genu; Tt—tibiotarsus.
FIGURE 4 in Redescription of the larva of Amblyomma oblongoguttatum Koch, 1844 (Acari: Ixodidae) by light and scanning electron microscopy
FIGURE 4. Amblyomma oblongoguttatum larva. Segmentation model of the idiosoma. Segments are indicated by Roman numbers (III–VI e VIII–XIV) and delimitated by dashed lines (----); series are indicated by Arabic numbers and delimitated by dotted lines (........). Integumentary structures are illustrated.
FIGURE 3. Amblyomma oblongoguttatum larva. Tarsus I in Redescription of the larva of Amblyomma oblongoguttatum Koch, 1844 (Acari: Ixodidae) by light and scanning electron microscopy
FIGURE 3. Amblyomma oblongoguttatum larva. Tarsus I ventral views. Abbreviations: v—ventral; a— antiaxial; p—paraxial; la—lateral anterior; lp—lateral posterior.
Population genetic structure and demographic history of the lone star tick, Amblyomma americanum (Ixodida: Ixodidae): new evidence supporting old records
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Figure 3 in Is Geckobiella stamii (Acari: Pterygosomatidae) a hyperparasite or phoretic on Amblyomma dissimile (Acari: Ixodidae) associated with Iguana iguana from Panama?
Figure 3 Geckobiella stamii, adult (white arrow) and egg covers, attached to ventral surface of Amblyomma dissimile.
Figures 1-2 from: Novaes RLM, Alves FM, Souza RF, Laurindo RS, Moratelli R (2020) Bats used as hosts by Amblyomma sculptum (Acari: Ixodidae) in Northeastern Brazil and its implications on tick-borne diseases. Zoologia 37: 1-4. https://doi.org/10.3897/zoologia.37.e56795
Figures 1-2 (1) Individual of Myotis lavali (MN 75191) parasitized by an engorged Amblyomma sculptum in the xerophytic caatinga from Northeastern Brazil. Photo: Carlos Cândido. (2) Individual of Noctilio albiventris (MN 79943) parasitized by some sub-adult individuals of hard tick Amblyomma sculptum and soft tick Ornithodoros sp. in the xerophytic caatinga from Northeastern Brazil. Photo: Roberto Leonan M. Novaes.
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